Progress monitoring is ongoing, and is both formal and informal. Formal assessments are done periodically, and informal outcomes are reported by teachers following each session. The duration of support varies by student, and is determined by many factors including attendance, progress and increased curricular demands. Students do best with regular attendance until they can master an area. Once a solid foundation is achieved, it is common for students to zig-zag in and out of the Centre when addressing a particular new learning challenge, a practice which is encouraged.